CN215324327U - Electrode bag for lithium battery electrode protection - Google Patents
Electrode bag for lithium battery electrode protection Download PDFInfo
- Publication number
- CN215324327U CN215324327U CN202120684710.6U CN202120684710U CN215324327U CN 215324327 U CN215324327 U CN 215324327U CN 202120684710 U CN202120684710 U CN 202120684710U CN 215324327 U CN215324327 U CN 215324327U
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- China
- Prior art keywords
- bag
- electrode
- sheet
- double
- bone
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 19
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 230000004888 barrier function Effects 0.000 claims abstract description 16
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 14
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 14
- 229920006267 polyester film Polymers 0.000 claims abstract description 12
- 210000000988 bone and bone Anatomy 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 210000003462 vein Anatomy 0.000 claims 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000002131 composite material Substances 0.000 abstract description 7
- 230000035699 permeability Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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- Bag Frames (AREA)
Abstract
The utility model discloses an electrode bag for lithium battery electrode protection, which comprises a bag body, wherein the bag body comprises a first bag sheet and a second bag sheet, three edges of the first bag sheet and three edges of the second bag sheet are bonded, a double-bone seal is arranged at the bag opening of the bag body, the first bag sheet and the second bag sheet are made of LLDPE, and one side of the first bag sheet and one side of the second bag sheet are compounded with a layer of barrier polyester film. The utility model controls the cost by applying the double-layer composite structure of the bag body made of LLDPE and the barrier polyester film, the moisture permeability can reach 0.1g/m2Day, the tensile strength MD can reach 450N/mm2, the TD can reach 350N/mm2, the double-bone sealing is applied, the sealing property of the bag body can be ensured, meanwhile, the lateral sealing can ensure that the bag opening is not easy to spread, compared with the existing electrode bag, the utility model has the advantages of low manufacturing cost, high product performance and high production and popularization values.
Description
Technical Field
The utility model relates to the field of electrode bags, in particular to an electrode bag for lithium battery electrode protection.
Background
The lithium battery is a battery which uses lithium metal or lithium alloy as positive and negative electrode materials and uses a non-aqueous electrolyte solution, and because the chemical characteristics of the lithium metal are very active, the processing, storage and use of the lithium metal have very high requirements on the environment, at present, an electrode bag with a three-layer composite structure is generally adopted for storing the electrode of the lithium battery, the three-layer composite structure is mainly 50 mu m PET +15 mu m Nylon +50 mu m LLDPE, the waterproof performance is enhanced, and the stable storage of the electrode can be ensured, wherein the LLDPE is linear low-density polyethylene, and the Barrier PET is Barrier polyester.
However, the waterproof performance of the motor bag with the structure can not meet the actual requirement, the moisture permeability of the electrode bag is 0.4 g/square meter, water seepage can still occur after the electrode bag is placed outdoors for a long time, meanwhile, the three-layer structure is not beneficial to process production, the price of some materials is high, and the production cost is very high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide the electrode bag for the lithium battery electrode protection, which adopts a double-layer composite structure, reduces the process production difficulty, adopts cheaper materials, reduces the cost and increases the waterproof performance.
In order to solve the technical problems, the utility model provides the following technical scheme:
the utility model relates to an electrode bag for lithium battery electrode protection, which comprises a bag body, wherein the bag body comprises a first bag sheet and a second bag sheet, three edges of the first bag sheet and three edges of the second bag sheet are bonded, a double-bone seal is arranged at the bag opening of the bag body, the first bag sheet and the second bag sheet are made of LLDPE, and one side of the first bag sheet and one side of the second bag sheet are compounded with a layer of barrier polyester film.
In a preferred embodiment of the present invention, the LLDPE layers of the first and second sheets have a thickness of 100 μm, and the barrier polyester film has a thickness of 12 μm.
As a preferable technical solution of the present invention, the surface of the first bag piece is provided with folding lines for facilitating the insertion of the electrode, and the number of the folding lines is at least two.
According to a preferable technical scheme of the utility model, the first bag piece and the second bag piece are glued at high temperature, and a twill for enhancing the connection strength is arranged at the joint of the first bag piece and the second bag piece.
As a preferred technical scheme of the utility model, the double-bone seal is made of polyethylene or rubber, the width of the double-bone seal is 28-32 mm, and a leakage-proof barrier strip is arranged in the double-bone seal.
As a preferable aspect of the present invention, the length of the bag body is 1300mm, and the width of the bag body is 800 mm.
As a preferable technical scheme of the utility model, the distance between the bone strips of the double-bone seal is 0.3-0.5cm, and the double-bone seal is in a lateral lying type.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model controls the cost by applying the double-layer composite structure of the bag body made of LLDPE material and the barrier polyester film, and the moisture permeability can reach 0.1g/m2Day, the tensile strength MD can reach 450N/mm2TD can reach 350N/mm2The double-bone sealing is applied, the sealing performance of the bag body can be ensured, meanwhile, the bag opening can be prevented from expanding easily through the lateral sealing, and compared with the existing electrode bag, the electrode bag has the advantages of low manufacturing cost, high product performance and high production and popularization values.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a partial cross-section of the pouch of the present invention;
FIG. 2 is a vertical cross-sectional view of the present invention;
FIG. 3 is an enlarged view of a portion of the present invention at A;
FIG. 4 is a front view of the present invention;
in the figure: 1. a bag body; 2. a first bag sheet; 3. a second sheet; 4. sealing the two bones; 5. folding lines; 6. Twill; 7. a leakage-proof barrier strip; 8. a barrier polyester film.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation. Wherein like reference numerals refer to like parts throughout.
Example 1
As shown in fig. 1-4, the present invention provides an electrode bag for lithium battery electrode protection, which includes a bag body 1, wherein the bag body 1 includes a first bag sheet 2 and a second bag sheet 3, three sides of the first bag sheet 2 and the second bag sheet 3 are bonded, a double-bone seal 4 is installed at a bag opening of the bag body 1, the first bag sheet 2 and the second bag sheet 3 are made of LLDPE, and one side of the first bag sheet 2 and one side of the second bag sheet 3 are compounded with a layer of barrier polyester film 8.
Furthermore, the thickness of the LLDPE layer of the first bag piece 2 and the second bag piece 3 is 100 μm, and the thickness of the barrier polyester film 8 is 12 μm, and experiments show that the waterproof performance of the first bag piece 2 and the second bag piece 3 in the proportion is the highest and can reach 0.1 g/square meter, Day, the waterproof effect is improved by four times, and the electrode can be stored outdoors for 3 months for a long time.
The surface of first bag piece 2 is provided with the fold line 5 that the electrode of being convenient for was put into, and the quantity of fold line 5 is two at least, and fold line 5 does not take up space when the bag body 1 is kept flat, puts into the electrode in the bag body 1 after, and the electrode will prop up fold line 5 to the capacity of the bag body 1 has been increased, and can avoid because the motor leads to the sack to prop open too greatly, influence the seal.
Through high temperature veneer between first bag piece 2 and the second bag piece 3, the junction of first bag piece 2 and second bag piece 3 is provided with joint strength's twill 6, and twill 6 has increased the joint strength of sealed department to the seal of the bag body 1 itself has been guaranteed.
The double-bone seal 4 is made of polyethylene or rubber, the width of the double-bone seal 4 is 28-32 mm, the double-bone seal 4 is internally provided with the leakage-proof barrier strip 7, the width of the double-bone seal 4 is set for facilitating daily taking, meanwhile, the sealing reliability of the bag body 1 can be ensured, and the leakage-proof barrier strip 7 can effectively prevent water seepage and water leakage.
The length of bag 1 is 1300mm, and the width of bag 1 is 800mm, and bag 1 of this size can satisfy the requirement of depositing of most electrodes.
The distance between the bone strips of the double-bone seal 4 is 0.3-0.5cm, the double-bone seal 4 is a lateral horizontal type double-bone seal 4 which can prevent the bag mouth of the electrode bag from expanding, and in the limit of the distance, the sealing effect of the double-bone seal 4 is better, and the opening and closing of the double-bone seal 4 are facilitated.
Specifically, two bones are sealed 4 and are referred to the sealing bag strip of paper used for sealing that has two sealed chains, and the lateral position formula indicates when sealing 4 at two bones after sealing, and two bones are sealed 4 laminating on the bag body 1, when using, only need put into the bag body 1 with the electrode to detain leak protection blend stop 7 can, LLDPE layer and separation polyester film 8's composite bed structure, can effectually prevent the seepage of water, has prolonged waterproof time.
The utility model controls the cost by applying the double-layer composite structure of the bag body 1 made of LLDPE material and the barrier polyester film 8, and the moisture permeability can reach 0.1g/m2Day, the tensile strength MD can reach 450N/mm2TD can reach 350N/mm2The double-bone sealing 4 is applied, the sealing performance of the bag body 1 can be ensured, meanwhile, the lateral sealing can ensure that the bag opening is not easy to expand, and compared with the existing electrode bag, the electrode bag has the advantages of low manufacturing cost, high product performance and high production and popularization values.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a lithium cell electrode is electrode bag for protecting pipe, includes bag body (1), its characterized in that, bag body (1) includes first bag piece (2) and second bag piece (3), trilateral bonding of first bag piece (2) and second bag piece (3), the sack department of bag body (1) is equipped with two bone seals (4), the material of first bag piece (2) and second bag piece (3) is LLDPE, compound one deck separation polyester film (8) of one side of first bag piece (2) and second bag piece (3).
2. The electrode bag for the electrode protection of the lithium battery as claimed in claim 1, wherein the thickness of the LLDPE layer of the first bag sheet (2) and the second bag sheet (3) is 100 μm, and the thickness of the barrier polyester film (8) is 12 μm.
3. The electrode bag for the electrode protection of the lithium battery as claimed in claim 1, wherein the surface of the first bag sheet (2) is provided with folded veins (5) for facilitating the insertion of the electrode, and the number of the folded veins (5) is at least two.
4. The electrode bag for the electrode protection of the lithium battery as claimed in claim 1, wherein the first bag sheet (2) and the second bag sheet (3) are bonded together at a high temperature, and the joint of the first bag sheet (2) and the second bag sheet (3) is provided with twills (6) for enhancing the joint strength.
5. The electrode bag for the lithium battery electrode protection as claimed in claim 1, wherein the material of the double-bone seal (4) is polyethylene or rubber, the width of the double-bone seal (4) is 28mm-32mm, and the double-bone seal (4) is internally provided with a leakage-proof barrier strip (7).
6. The electrode bag for the lithium battery electrode protection according to claim 1, wherein the length of the bag body (1) is 1300mm, and the width of the bag body (1) is 800 mm.
7. The electrode bag for the lithium battery electrode protection as claimed in claim 1, wherein the distance between the bone strips of the double bone seals (4) is 0.3-0.5cm, and the double bone seals (4) are in a lateral position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120684710.6U CN215324327U (en) | 2021-04-02 | 2021-04-02 | Electrode bag for lithium battery electrode protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120684710.6U CN215324327U (en) | 2021-04-02 | 2021-04-02 | Electrode bag for lithium battery electrode protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215324327U true CN215324327U (en) | 2021-12-28 |
Family
ID=79592713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120684710.6U Expired - Fee Related CN215324327U (en) | 2021-04-02 | 2021-04-02 | Electrode bag for lithium battery electrode protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215324327U (en) |
-
2021
- 2021-04-02 CN CN202120684710.6U patent/CN215324327U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211228 |